The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 19, 2002
Filed:
May. 08, 2000
Gabriel M. Rebeiz, Ann Arbor, MI (US);
Kiran Nimmagadda, Ann Arbor, MI (US);
The Regents of The University of Michigan, Ann Arbor, MI (US);
Abstract
A subharmonic double-balanced mixer (SDBM) combines a first signal having an RF frequency and a plurality of LO drive signals each having a frequency approximately one-half the RF frequency to obtain an output signal having an intermediate frequency. The intermediate frequency can be the baseband signal in direct conversion receivers. Two embodiments of the current invention using a two-level transistor circuit are described. In one of the embodiments, the RF section is in the bottom level transistors and in the other, the LO section is in the bottom level transistors. The device occupies a substantially reduced area on a semiconductor chip when compared with prior art devices.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile